Heimee



UNITED STATES PATENT OFFICE.

WILLIAM FELDENHEIMER, or LONDON, AND WALTER WILLIAM PLOWMAN, OF EAST SHEEN, ENGLAND.

No Drawing. 1

To all whom it may concern:

Be it known that we, WlLLIAM FELDEN- HEIMER and WALTER WILLIAM PLowMA'N, subjects of the King of England, residing in London, England, and East Sheen, in the county of Surrey, England, respectively, have invented certain new and useful Improvements in 'Soaps or Saponaceous Com-' incorporated than has heretofore been pos.

sible and better results are obtainable.

According to that part of the invention Which relates to the process of manufacture, this consists in making a suspension of clay and water containing a deflocculator in such proportions as to bring the clay to a sol state and mixing this with soap while in a fluid condition.

Preferably the clay suspension is intro- .duced into the soap at approximately the same temperature as the soap.

It is found that when the clay in this state is added to the soap not only can more clay be incorporated, but a more perfect blending takes place and still a hard and good quality soap can be produced as the finished article.

According to one method of carrying out this invention, 1 cwt. of china-clay refined by the known use of sodium carbonate as a deflocculator to allow the mica and other impurities to settle and then by the use of a flocculator such as alum to deposit the clay,

is added to 120-125 lbs. of hard water such as London tap water at a temperature of about 120 F. containing 1%;% by weight of caustic soda (98%) relatively to the weight of the clay. After stirring to thoroughly mix these ingredients, the mixure is run into 2%3-8 cWt. of soap kept at approximately 120 F. in the crutching pan; after crutching, it is run into the soap frames in the ordinary manner to dry.

It is understood that the soap, prior to Specification of Letters Patent.

SOAP on SAPONACEOUS COMPOSITION AND PRbGESS OF MANUFACTURING THE SAME.

Patented Nov. 11, 1919.

Application filed March 22. 1919; Serial No. 284,370.

running the clay into it, is as nearly neutral as ossible. 4

nstead of employing caustic soda, sodaash may be used, in which case 1%3% relatively to the weight of the clay is employed.

Some importance attaches to the percentage of the deflocculator employed. For instance if the caustic soda (98%) is increased to 3% relatively to the weight of the clay, instead of the viscosity of the clay suspension being lowered to the consistency of a. thin fluid as is the case when only 19 is used, it is raised to that of a thick paste making it more difficult, if not impossible to work. What should always be aimed at is to use the maximum quantity of clay with a minimum quantity of water which will provide sufficient fluidity when the deflocculator is added.

If the clay is not in a properly fluid state when mixed with the soap, incorporation and amalgamation with the soap will be correspondingly less eflicient.

Obviously the reason for using a minimum quantity of water is to more easily effeet the drying of the soap.

Other deflo'cculators may beused, for example sodium silicate or organic substances SUCIl; as gum arabic and sodium citrate (neutra It is foundthat with the incorporation of the clay in this manner, which clay is entirely free from grit, so that there is nothing to settle out, the detergent properties of the soap are improved. The amount of clay incorporated relatively to the soap of course depends upon the quality oil soap or the kind of soap required. The soap which lends itself best to the process'is that provegetable oil stock.

What We claim as our invention and desire to secure by Letters Patent is 1. The process for producing a soap or saponaceous composition consisting in making a suspension of clay and water containing a deflocculator in such proportions as to bring the clay to a sol state and mixing this with soap while in a fluid condition.

2. The process for producing a soap or saponaceous composition consisting in making a suspension of clay in water containing a deflocculator in such proportions as to bring the clay to a sol state and mixing this 110 with" the hot soap when at a temperature which is about equal to that of the hot fluid soa v The process for producing'a soap or" saponaceous composition consisting in making a suspension of clay and Water in the proportions of about 1 cwt. of clay to about 120-125 lbs. of hard Water such as London tap water at atemperature of about 120 F. and containing 1%% by Weight of caustic soda (98%) relatively to the clay and after thorough mixing, running the mixture into 2&8 cWt. of soap heated to a fluid condition.

In testimony whereof We have signed our names to this specification in the presence of 15 two subscribing Witnesses.

WILLIAM FELDENHEIMER. WALTER WILLIAM PLOWMAN. Witnesses:

HARRY J. JUDGE, FRANK MOORE. 

